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Cirsium boninense
Species of plant From Wikipedia, the free encyclopedia
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Cirsium boninense is a species of thistle in the family Asteraceae that is endemic to the Bonin Islands of Tōkyō Metropolis, Japan.[1][2]
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Taxonomy
The species was first described by Japanese botanist Gen-ichi Koidzumi in 1914.[1] The specific epithet relates to the type locality (Chichijima) in the Bonin Islands.[1]
Description
Cirsium boninense is a perennial plant with white flowers from May to June that grows to a height of 40–150 centimetres (16–59 in) among the grasses and rocks in coastal areas, as well as on the forest floor.[3][4]
Conservation status
Cirsium boninense is classed as Near Threatened on the Ministry of the Environment Red List.[5][6] According to the Red Data Book Tokyo, though decreasing on Chichijima, numbers are increasing on Muko-jima and Nakōdo-jima.[3]
See also
References
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